†family Palaeaspidae Kiaer 1932 (jawless fish)
Pteraspidomorpha - Poraspidei - Palaeaspidae
Full reference: J. Kiaer. 1932. The Downtonian and Devonian vertebrates of Spitsbergen. IV, Suborder Cyathaspida. Skrifter Om Svalbard Og Ishavet 52:1-26
Parent taxon: Poraspidei according to J. Kiaer 1932
See also van der Laan 2019
Sister taxa: Ctenaspidae, Dinaspidae
Subtaxa: none
Ecology: planktonic suspension feeder
Distribution:
• Devonian of Ukraine (1 collection)
• Silurian of United States (3: New York, Pennsylvania)
Total: 4 collections including 5 occurrences